I have a 2003 LandCruiser Amazon 1HD-FTE which is cranking strong but not starting. Could someone please help me in how I can diagnose if this is an electrical fault or a mechanical fault. Has anyone utilised medtro's EFI Relay Bypass Kit or even a similar kit for the 4.2 turbo diesel engine. It feels like it is not getting fuel but it is very difficult to diagnose the exact cause.